A character design of a muscle cell mascot inspired by human muscle fibers — a soft, semi-realistic biological cell turned into a cute, expressive character. The body texture looks like detailed muscle tissue, with glowing fiber patterns and smooth organic shapes. The character should be capable of showing three emotional or physical states for product storytelling: 1. Cold and contracted: shivering, slightly blue tones, fibers tightened, giving a cooling and refreshing effect. 2. Warm and expanded: relaxed and puffy, reddish tones, glowing with warmth and relief. 3. Calm and relaxed: neutral, peaceful face, balanced tones, showing comfort and restored energy. The design should be suitable as the main mascot for a muscle relief product, combining biology-inspired textures with emotional expressiveness. Style: soft 3D look, high detail, clean background, professional concept art for packaging or animation use. See more